PixArt Imaging Inc.

PAW3203DI

Wireless Optical Mouse Single Chip

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9

PixArt Imaging Inc.

V0.3 April. 2008

5.3 2.7V Application Circuit (with Red LED)

VCC_2.7V

SW1

C22

0.1uF

SW4

VCC_2.7V

B4

D1

#2. EEPROM Circuit

RFcarrier

RFcarrier

* C19

RFU

+

C21

10uF

#4. Sensor Circuit

+

C23

1uF

Q3

3904

C24

0.1uF

SW5

VCC_2.7V

RFID

R4

10R

LED_2.7V

L1

200uH

VCC_2.7V

Z1

C5

0.1uF

B5

LKEY

BAT(1.5V)

U1

ELM9327

VOUT

SW

X1

27.042MHZ

RFDATA

RKEY

LED_2.7V

Z2

R2

10K

+

C2

47uF

VCC_2.7V

ISCK

BatDetect

RFU

C10

0.1uF

Z2

RKEY

RFDATA

+

C20

1uF

RFEN

SW2

LKEY

C18 10pF

MKEY

C9

0.1uF

SW3

R1

DC/DC Converter

C13

100pF

Q1

2N3906

RFID

+

C11

1uF

VR2

500K

RFosc

BatDetect

U4

PAW3203DI

20

17

23

2

24

15

6

3

21

7

14

16

8

13

1

19

10

22

4

18

9

5

11

12

BR

RFID

RFU

ZY2

BATLow

ISCK

OSCOUT

BL

BM

OSCIN

NC

ISDA

VDDD

B5

ZY1

RFEN

VDD

NC

B4

RFDATA

VSS

LED

VDDA

VREF

MKEY

+

C1

47uF

R5

100K

VR1

500K

C6

22pF

ISCK

* SW7

Z1

ENSW1

ENCODER

Z2

Z1

COM

U3

24AA02

A0

A1

A2

VSS SDA

SCL

WP

VCC

D2

1N5819

ISDA

RFEN

#1. Battery Power Circuit

Note1: Please reserve C19, SW7 for future use

Q2

3904

ISDA

+

C8

1uF

C12

100pF

B5

R3 10K

SW6

#3. RF TX Circuit

VCC_2.7V

RFosc

BAT(1.5V)

B4

Figure 8. Application Circuit for 2.7V (with Red LED)